For those looking for a complete all-round filtering device, the new BLS 424 ABEK1P3 R combination filter will satisfy any need! This particular product offers total protection for the respiratory tract, a crucial aspect when working in environments in contact with substances that are particularly harmful to health, so it is necessary to assess all risks in advance to make an informed purchase. The BLS 424 ABEK1P3 R filter offers protection against various pollutants such as: Particulates i.e. dust, mists and fumes Organic and inorganic gases and vapors with boiling points above 65° Acidic gases such as hydrochloric acid, sulfuric acid, hydrofluoric acid, etc. Ammonia and derivatives Its structure consists of a durable ABS casing with two combined cartridges inside to offer dual protection: a pleated fabric filter allows 99.99% of particulates to be filtered out, equally reducing respiratory fatigue; a particularly porous activated carbon filter traps gases and vapors on internal surfaces while fully complying with all safety standards due to the absence of toxic additives. The BLS 424 ABEK1P3 R filter is exclusively compatible with BLS SGE46 half-masks, 5000 series (5150, 5400) whole masks and 3000 series masks due to the universal connection with standardized threads. The device is certified as Category III PPE complying with technical standard EN 143:2000 + A1:2006 and EN 14387:2004 + A1:2008. The package contains 4 pcs.